100 ! will mark

1. what are the solutions to the equation 4b^2−45=−9

enter your answer with no spaces like the example provided here: x=2,-1

2. what are the zeros of the function represented by the quadratic expression
2x^2+x−3

3. simplify

−245−−√+33√+23√

4. 28√⋅20−−√

which of these is equivalent to this expression?

a. 3210−−√

b. 5

c. 810−−√

d. 228−−√

5. which product is irrational?

a. 2√⋅50−−√

b.10−−√⋅8√

c. 9√⋅49−−√

d. 64−−√⋅4√

Step-by-step explanation:

1. Add 45 to both sides

4b^2 = 36

b^2 = 9

b = 3,-3

2. Quadratic formula

(-1 +- sqrt(1^2 - 4(2)(-3)))/4

(-1 +- sqrt(1 + 24))/4

(-1 +- sqrt(25))/4

(-1 +- 5)/4

4/4 or -6/4

x=1,-3/2

I don't really understand the way 3 or 4 are written, do you have a picture?

can you explain the answer a little bit better

Step-by-step explanation:

2.56 is the width of the garden

step-by-step explanation:

answer: 10 meter

step-by-step explanation:

need details